    Component({
      externalClasses: ["ext-class"],
      properties: {
        placeholder: {
          type: String,
          value: ""
        },
        value: {
          type: String,
          value: ""
        },
        maxlength: {
          type: Number,
          value: 200
        },
        indicator: {
          type: Boolean,
          value: false
        },
        autoHeight: {
          type: Boolean,
          value: true
        },
      },
      data: {},
      methods: {
        handleInputChange(e) {
          // 解构赋值，按格式赋值，e.detail如果不存在t赋值默认值{},最后a拿到的是e.detail.value
          const {
            detail: t = {}
          } = e, {
            value: a = ""
          } = t;
          this.setData({
            value: a
          })
          this.triggerEvent("input", e.detail)
        }
      }
    });